Remove/install coolant circulation pump

AR83.70-P-5700F

Remove/install coolant circulation pump

7.9.10

 

Removing, installing

 Danger!

Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage bottles.

Wear protective gloves, protective clothing and eye protection.

AS20.00-Z-0001-01A

1

Reduce pressure in coolant circuit

 To do this, turn closure cap of coolant expansion tank to notch position 1.

2

Unclip heater cover (5)

 If necessary, release fixing of combustion air intake hose (12).

3

Disconnect circulation pump coupling (8)

 Installation: coupling is coded.

4

Release attachment (17) and detach circulation pump bracket (13)



 Installation: attach circulation pump bracket first.

*BA83.70-P-1004-01A

5

Detach coolant feed hose (4) and coolant return hose (3)



*000589543700

6

Detach circulation pump (A6m1) from coolant hose (4)

 Collect escaping coolant and fill back into coolant expansion tank after installation.

7

Replace pump cover from circulation pump (A6m1) to be installed with a pump cover with a straight inlet connection (23)

 Ensure gasket (q) is seated correctly.

8

Install in the reverse order

9

Bleed coolant circuit after installation

AR83.70-P-5302-01E

Checking

 Danger!

Risk of explosion due to fuel vapors, risk of poisoning from breathing in combustion gases and risk of injury due to combustions during or after heating operation

Do not operate stationary heater, auxiliary heater or engine with heater booster in closed areas or when refueling. Allow heater unit to cool down after operation and wear protective gloves.

AS83.70-Z-0002-01A

10

Start up stationary heater



Start up stationary heater

 If the heater (A6) switches off automatically before reaching its operating temperature and if it cannot be restarted, there is a fault interlock: 

AZ83.70-P-0008-04A

Cancel fault interlock for vehicles up to 31.1.00.

AR83.70-P-5302-07A

Cancel fault interlock for vehicles as of 1.2.00.

AR83.70-P-5302-07CA

11

Check cooling system for leaks

AR20.00-P-1010HA

Number

Designation

MODELS
170, 202, 208, 210
with Thermo Top C heater

BA83.70-P-1004-01A

Screw for stationary heater circulation pump

Nm

4